Interval Estimation of Sensor and Actuator Faults for Decoupled Multimodel

This paper addresses the estimation problem of sensor and actuator faults for nonlinear systems represented by decoupled multimodel affected by unknown but bounded disturbnces and measurement noise. For this, an interval multiobserver is designed to estimate state and default vectors simultaneously. The existence of the interval observer is formulated using Linear Matrix Inequalities (LMI) to guarantee stability conditions. Finally, the effectiveness of the proposed method is proven by simulation results.